The possibility of mode switching from one pulse to another in a 6-cavity gigawatt magnetron with axial extraction of radiation through a horn antenna (such a magnetron is known as the MDO, i.e.,… (More)

The output characteristics of magnetrons can be significantly improved by using a cathode that is transparent to the synchronous electromagnetic fields thereby providing improved conditions for fast… (More)

A compact A6 relativistic magnetron is proposed which operates in the π-mode and whose radiation is extracted axially as a TE11 mode through a cylindrical waveguide with the same cross section as… (More)

The interaction of the fast cyclotron wave of a linear electron beam guided by a magnetic field with a counter- propagating electromagnetic wave leads to the appearance of a stop-band over a wide… (More)

We demonstrate the ability to form simple radiation patterns from a relativistic magnetron with axial extraction. This is achieved by tapering onto a conical antenna only those cavities of the anode… (More)

We present a compact relativistic magnetron with a simple mode converter that radiates the TE11-mode when the operating mode of the magnetron is the π-mode. The magnetron used in this study has the… (More)

We present a method to improve the selective properties of a waveguide resonator with Bragg reflectors on both ends, a passive device that is widely used in microwave engineering and optoelectronics.… (More)

Mario Fuks is an associate professor of the Federal University of Minas Gerais (UFMG), Brazil. Email: mariofuks@uol.com.br Gabriel Avila Casalecchi is a Ph.D. candidate in Political Science at the… (More)